Portage Learning
MICRO 100 / MICRO100 ALL EXAMS QUESTIONS AND ANSWERS - PRE-EXAM; MODULE 1 – 6
1. True or False: A virus is considered a
... [Show More] microorganism.
2. What is the smallest biological unit of life?
3. At a generalized level, all cells are comprised of what?
1. Which of the following microorganisms are considered to be Eukarya? Select all that apply.
A. Animalia
B. Plantae
C. Fungi
D. Protista
2. True of False: All multicellular microorganisms classified as Animalia are heterotrophic.
3. Microorganisms classified as Plantae obtain most of their energy by converting energy into energy.
1. Define catabolism.
Upon cellular injury, which metabolic process is involved during the growth and repair phases of the cell?
1. In phosphorylation, the light reactions always occur where?
2. True or False: The Calvin cycle must occur in the absence of light.
1. Assuming a constant (non-adjustable) light source power, identify the part of the microscope you would adjust to limit the amount of light entering the microscope.
Select all that apply.
A. Objective
B. Condenser
C. Iris diaphragm
D. Eye piece
2. What is the total magnification (relative to your eye) of a sample imaged with a 60x objective and a 10x eyepiece? Show your math.
1. Identify what type of electron microscope was used to capture the following image and explain your choice.
The image was captured using a Scanning Electron Microscope (SEM). The above image shows the trademark ‘shell’ image (no subcellular organelles are visible) reminiscent of SEM. Only TEM is capable of visualizing subcellular substrucutres.
1. True or False: LB agar is classified as a selective, non-differential media.
2. What is agar used for in microbiology?
1. True or False. When performing a dilution streak a new (or sterilized) loop is not required for each phase as long as the bacterial culture is pure.
2. The number of phases (3 vs. 4) and/or the number of times a loop passes through a previous phase (once vs. multiple times) is acceptable provided what happens?
3. True or False. Pathogenic strains of bacteria tend to grow slower than normal non-pathogenic bacterial strains.
1. Match the following symptoms with their respective diseases:
1. Folliculitis
D
2. Scalded-skin syndrome
E
3. Impetigo
A
4. Conjunctivitis
Ophthalmia Neonatorum
2. True or False. The causative agent of conjunctivitis can be either bacterial or viral.
1. True or False. There are currently no cures for tetanus.
2. Identify the medical condition characterized by robust carbohydrate fermentation under anaerobic conditions, swelling of the infected areas and fever.
Gas gangrene. The key identifier here is the robust carbohydrate fermentation, which manifests as
3. The alpha-toxin perfringolysin is associated with which medical condition caused by Gram-positive anaerobic bacteria?
1. The envelope surrounds the of some viruses.
2. True or False. You would expect to see a viral envelope on a virus infecting a bacterial cell.
3. Rank the following viruses based on their size from largest to smallest:
Paramyxovirus Poliovirus Smallpox virus
1. What linear, double-stranded, enveloped DNA virus is the first virus (as of Oct. 26, 1977) to be officially declared eradicated?
2. What small (~30nm) single-stranded, non-enveloped RNA virus targets the CNS (central nervous system), causing potentially catastrophic damage to motor neurons?
3. By whom and where was the first Polio vaccine developed?
Which subtype of Influenza is the most virulent?
True or False: A virus is classified as a microbe.
True or False: The smallest biological unit of life is the molecule.
What are the 4 main types of macromolecules found in cells?
Exam Page 2
1. How many different types of amino acids are available from which to make proteins?
2. Define an essential amino acid.
Exam Page 3
1. Where can the two major types of nucleic acids be found in the cell and what are their roles?
Exam Page 4
1. Complete the following DNA strand and indicate how many bonds are formed for each complementary pair: 3’ GGTCATCG 5’
5’ CC AGC 3’
Exam Page 5
1. The plasma membrane (select all that are true):
A. Only restricts movement of materials into the cell
B. Is often a bilayer comprised of lipids
C. Cannot prevent essential nutrients from escaping
D. Contains hydrophobic tails pointing inward
Carbon, Hydrogen and Oxygen atoms come together to form what primary macromolecule? Give an example.
1. True of False: Eukaryotic cells do not have a nucleus
2. True or False: Prokaryotic cells can be subdivided into Bacteria and Archaea.
3. Describe the 4 basic bacterial morphologies.
4. True or False: Archaea, a eukaryotic class of microorganisms, are capable of surviving harsh environments.
Exam Page 7
1. Which of the following microorganisms are considered to be Eukarya? Select all that apply.
True of False: All multicellular microorganisms classified as Animalia are heterotrophic.
2. Microorganisms classified as Plantae obtain most of their energy by converting energy into energy.
Exam Page 8
1. A defining characteristic of fungi is the presence of chitin in the cell walls. Which of following also contain chitin? Select all that apply.
True or False: A defining characteristic of Protista is the inability of colonies to form tissue layers.
Exam Page 9
1. Cell walls are found in which of the following (select all that apply):
2. The function of the ribosome is (select all that apply):
1. Identify the following cellular components by matching the number with the description.
1. True or False: Metabolism is a controlled set of biochemical reactions that occur in living organisms in order to maintain life.
True or False: Enzymes are polysaccharides that catalyze chemical reactions.
What are usually metal ions known to assists enzyme during the catalysis reaction?
1. Define catabolism.
Upon cellular injury, which metabolic process is involved during the growth and repair phases of the cell?
1. Describe the energy transfer process relative to both ATP and ADP.
From what source do chemotrophs acquire energy?
2. An organism that obtains its source of carbon from inorganic molecules such as carbon dioxide is referred to as a ?
3. This phosphorylation process occurs in the mitochondria of chemotropic eukaryotes.
1. Identify the products of the following chemical equation:
2. What are the main two roles of glucose-6-phosphate in the cell?
True or False: During fermentation one means of eliminating pyruvate is by converting it into lactic acid.
1. What is the primary byproduct of the TCA cycle? Select all that apply.
True or False. The reactants of the TCA cycle directly enter and fuel the electron transport system.
1. In the absence of glucose, which of the following can be used as alternative energy sources? Select all that apply.
2. For the catabolism of proteins and lipids, which of the following enzymes are used? Select all that apply.
3. True or False. The β-oxidation pathway catabolizes the fatty acid chains of lipids.
1. Describe the relationship between chloroplasts and chlorophyll.
True or False: Chloroplasts are specific to algae and plants.
2. The process of photophosphorylation produces which of the following: select all that apply.
In phosphorylation, the light reactions always occur where?
True or False: The Calvin cycle must occur in the absence of light.
How many turns (or repititions) of the Calvin Cycle are required to generate one molecule of glucose?
1. Complete the following equation by placing the appropriate numbers where indicated.
1. Match the following reactions to its corresponding enzyme: [Show Less]